8720012

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{443}}^1$

素因数の和:510

約数の個数: 48

約数和(自身を含む): 18896640

約数和(自身を除く): 10176628

約数列:

[1, 2, 4, 7, 14, 19, 28, 37, 38, 74, 76, 133, 148, 259, 266, 443, 518, 532, 703, 886, 1036, 1406, 1772, 2812, 3101, 4921, 6202, 8417, 9842, 12404, 16391, 16834, 19684, 32782, 33668, 58919, 65564, 114737, 117838, 229474, 235676, 311429, 458948, 622858, 1245716, 2180003, 4360006, 8720012]

約数ペア:

[(1, 8720012), (2, 4360006), (4, 2180003), (7, 1245716), (14, 622858), (19, 458948), (28, 311429), (37, 235676), (38, 229474), (74, 117838), (76, 114737), (133, 65564), (148, 58919), (259, 33668), (266, 32782), (443, 19684), (518, 16834), (532, 16391), (703, 12404), (886, 9842), (1036, 8417), (1406, 6202), (1772, 4921), (2812, 3101)]